Tiffani Thiessen and Mario Lopez enjoy a Saved By The Bell reunion on The Ellen Show

And on Thursday, Tiffani Thiessen and Mario Lopez reminisced over old times as they reunited on an episode of The Ellen DeGeneres Show.

Lopez, who starred as A.C. Slater on the high school series, was guest hosting for Ellen and welcomed the actress who played Kelly Kapowski.

Together again: It's 25 years since their TV sitcom went off the air. And Thursday, Tiffani Thiessen and Mario Lopez reminisced over old times as they reunited on an episode of The Ellen DeGeneres Show

The pair, both 44, agreed that they're now 'really old' and spoke about how their children have watched them in old episodes of the sitcom that ran for five seasons on NBC